Basis of Presentation and Summary of Significant Accounting Policies	9 Months Ended
Sep. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Summary of Significant Accounting Policies	Basis of Presentation and Summary of Significant Accounting Policies Unless otherwise noted in this report, any description of "we," "us" or "our" includes Molson Coors Brewing Company ("MCBC" or the "Company"), principally a holding company, and its operating and non-operating subsidiaries included within our reporting segments and Corporate. Our reporting segments include: Molson Coors Canada ("MCC" or Canada segment), operating in Canada; MillerCoors LLC ("MillerCoors" or U.S. segment), which is accounted for by us under the equity method of accounting, operating in the United States ("U.S."); Molson Coors Europe (Europe segment), operating in Bulgaria, Croatia, Czech Republic, Hungary, Montenegro, Republic of Ireland, Romania, Serbia, the United Kingdom ("U.K.") and various other European countries; and Molson Coors International ("MCI"), operating in various other countries. Unless otherwise indicated, information in this report is presented in U.S. dollars ("USD" or "$") and comparisons are to comparable prior periods. Our primary operating currencies, other than USD, include the Canadian Dollar ("CAD"), the British Pound ("GBP"), and our Central European operating currencies such as the Euro ("EUR"), Czech Koruna ("CZK"), Croatian Kuna ("HRK") and Serbian Dinar ("RSD"). On November 11, 2015, we entered into a purchase agreement (as amended, the "Purchase Agreement") with Anheuser-Busch InBev SA/NV to acquire all of SABMiller plc's (“SABMiller”) 58% economic interest and 50% voting interest in MillerCoors and all trademarks, contracts and other assets primarily related to the Miller brand portfolio outside of the U.S. and Puerto Rico as described in the Purchase Agreement (the "Acquisition"). Following the closing of the Acquisition on October 11, 2016, MillerCoors became a wholly-owned subsidiary of MCBC and as a result, MCBC now owns 100% of the outstanding equity and voting interests of MillerCoors. See Note 16, "Acquisition" for further details. The accompanying unaudited condensed consolidated interim financial statements reflect all adjustments which are necessary for a fair statement of the financial position, results of operations and cash flows for the periods presented in accordance with accounting principles generally accepted in the U.S. ("U.S. GAAP"). Such unaudited interim condensed consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q pursuant to the rules and regulations of the U.S. Securities and Exchange Commission ("SEC"). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. These unaudited condensed consolidated interim financial statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2015 ("Annual Report"), and have been prepared on a consistent basis with the accounting policies described in Note 1 of the Notes to the Audited Consolidated Financial Statements ("Notes") included in our Annual Report. Our accounting policies did not change in the first three quarters of 2016. The results of operations for the three and nine months ended September 30, 2016, are not necessarily indicative of the results that may be achieved for the full year.

Basis of Presentation and Summary of Significant Accounting Policies

Unless otherwise noted in this report, any description of "we," "us" or "our" includes Molson Coors Brewing Company ("MCBC" or the "Company"), principally a holding company, and its operating and non-operating subsidiaries included within our reporting segments and Corporate. Our reporting segments include: Molson Coors Canada ("MCC" or Canada segment), operating in Canada; MillerCoors LLC ("MillerCoors" or U.S. segment), which is accounted for by us under the equity method of accounting, operating in the United States ("U.S."); Molson Coors Europe (Europe segment), operating in Bulgaria, Croatia, Czech Republic, Hungary, Montenegro, Republic of Ireland, Romania, Serbia, the United Kingdom ("U.K.") and various other European countries; and Molson Coors International ("MCI"), operating in various other countries. Unless otherwise indicated, information in this report is presented in U.S. dollars ("USD" or "$") and comparisons are to comparable prior periods. Our primary operating currencies, other than USD, include the Canadian Dollar ("CAD"), the British Pound ("GBP"), and our Central European operating currencies such as the Euro ("EUR"), Czech Koruna ("CZK"), Croatian Kuna ("HRK") and Serbian Dinar ("RSD").

On November 11, 2015, we entered into a purchase agreement (as amended, the "Purchase Agreement") with Anheuser-Busch InBev SA/NV to acquire all of SABMiller plc's (“SABMiller”) 58% economic interest and 50% voting interest in MillerCoors and all trademarks, contracts and other assets primarily related to the Miller brand portfolio outside of the U.S. and Puerto Rico as described in the Purchase Agreement (the "Acquisition"). Following the closing of the Acquisition on October 11, 2016, MillerCoors became a wholly-owned subsidiary of MCBC and as a result, MCBC now owns 100% of the outstanding equity and voting interests of MillerCoors. See Note 16, "Acquisition" for further details.

The accompanying unaudited condensed consolidated interim financial statements reflect all adjustments which are necessary for a fair statement of the financial position, results of operations and cash flows for the periods presented in accordance with accounting principles generally accepted in the U.S. ("U.S. GAAP"). Such unaudited interim condensed consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q pursuant to the rules and regulations of the U.S. Securities and Exchange Commission ("SEC"). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations.

These unaudited condensed consolidated interim financial statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2015 ("Annual Report"), and have been prepared on a consistent basis with the accounting policies described in Note 1 of the Notes to the Audited Consolidated Financial Statements ("Notes") included in our Annual Report. Our accounting policies did not change in the first three quarters of 2016.

The results of operations for the three and nine months ended September 30, 2016, are not necessarily indicative of the results that may be achieved for the full year.